35 4-8.   If a sine wave is applied to the input of a series-positive limiter, which of the following waveforms describes the output? 1. 3. 2. 4. 4-9.   The amplitude of the output of a series- diode limiter is figured using which of the following formulas? 1. 2. 3. 4. ____________________________________ IN ANSWERING QUESTIONS 4-10 AND 4-11, ASSUME YOU ARE FIGURING OUTPUT AMPLITUDES FOR SERIES- POSITIVE LIMITERS AND CIRCUIT CONDITIONS ARE AS FOLLOWS: E_in = 30 vac R1 = 20,000 W R_ac = 100 W (forward bias) R_ac = 150,000 W (reverse bias) ____________________________________ 4-10.   With forward bias, what is the output amplitude? 1.   28.95 volts 2.   29 volts 3.   29.85 volts 4.   29.95 volts 4-11.   With reverse bias, what is the output amplitude? 1.   .175 volt 2.   1.75 volts 3.   3.53 volts 4.   3.75 volts 4-12.   In a series-positive limiter, where is the input signal applied? 1.   Directly to the anode of the diode 2.   Directly to the cathode of the diode 3.   To the anode of the diode through a series input resistor 4.   To the cathode of the diode through the output resistor